There are many types of low-voltage electrical appliances, and there are many classification methods. 1. According to the action mode can be divided into: (1) Manual electrical appliances--Electrical appliances that rely on direct external operation to switch, such as knife switches and push button switches. (2) Automatic electrical appliances - electrical appliances that operate automatically by commands or physical quantities, such as contactors and relays. 2. According to the use can be divided into: (1) Low-voltage control electrical appliances--mainly play a controlling role in low-voltage power distribution systems and power equipment, such as knife switches and low-voltage circuit breakers. (2) Low-voltage protection electrical appliances--mainly in the medium-term protection of low-voltage power distribution systems and power equipment, such as fuses, thermal relays, etc. 3. According to the type can be divided into: Knife switches, blade switches, fuses, low voltage circuit breakers, contactors, relays, mains and automatic switches. Device Selection 1. The electrical appliances selected for the low-voltage power distribution design shall comply with the relevant national standards and shall meet the following requirements. 1) The rated voltage of the appliance should be compatible with the nominal voltage of the circuit in which it is located. 2) The rated current of the appliance should not be less than the calculated current of the loop 3) The rated frequency of the appliance should be adapted to the frequency of the port 4) Electrical appliances should be adapted to the environmental conditions of the site 5) The electrical appliance should meet the requirements of dynamic stability and thermal stability under short-circuit conditions. The electrical equipment used to break the short-circuit current should meet the on-off capability under short-circuit conditions. 2. Check the continuity of the electrical equipment under short-circuit conditions. The effective value of the expected short-circuit current component of the installation should be used. When the sum of the rated current of the motor connected near the short-circuit point exceeds 1% of the short-circuit current, it should be included in the motor feedback. Electricity The impact of Schneider's low-voltage electrical flow. Power Tools
Features
1. Adjustable
speed, Forward and reverse rotation;
2. 3-Mode
operation, drill, rotary hammer and demolition
3.360° auxiliary
Ronix-design anti-shock handle provides a wide range of movements along with
operator's comfort
4.Extensive soft
grip will reduce fatigue during long hours of working
Electric Hammer
Drill
Max. Drilling
Diameter:26mm
Rated
Voltage:220v
Weight:6.4kg, 6.4KG
Product
name:rotary hammer
Max drlling
diameter:26mm
Rated
voltage:220v
Rated
frequency:1000w
Impact
force:4.0J
Max impact
rate:4000bp
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